[Hemorrhagic rectocolitis and carcinoma of the colon. Contribution of flow cytometry. Report of 3 cases].
Carcinoma complicating ulcerative colitis, although an uncommon event, is well known but follow-up of patients to detect high-grade dysplasia as a potential indicator for colectomy is very difficult. Retrospective morphological and cytometrical analysis of three resected colons harboring carcinoma coming from patients with ulcerative colitis were performed. It allowed to confirm the value of this technique. Histogram patterns varied between narrow unimodal in quiescent mucosa to broad unimodal with high IP (proliferation index) in regenerative mucosa and aneuploid in high dysplasic mucosa and carcinoma. In addition to histopathology and in spite of a patchy distribution of aneuploidy, different degrees of dysplasia in mucosa and technical sensibility DNA (desoxyribonucleic acid) analysis in long-standing ulcerative colitis seems to be helpful in the detection of potential malignancy.
Hemet
J
J
Laboratoire d'Anatomie Pathologique, CHU Charles-Nicolle, Rouen.
Laquerrière
A
A
Lemoine
F
F
Doublet
B
B
Metayer
J
J
D000328:Adult; D002277:Carcinoma / Q000209:etiology* / Q000473:pathology; D003093:Colitis, Ulcerative / Q000150:complications*; D003110:Colonic Neoplasms / Q000209:etiology* / Q000473:pathology; D005260:Female; D005434:Flow Cytometry / Q000379:methods*; D006801:Humans; D008297:Male; D008875:Middle Aged
Rectocolite hémorragique et carcinome colique. Données de la cytométrie en flux. A propos de trois observations.